Maintenance - Honeywell BA195 miniBA Einbauanleitung

1. Safety Guidelines
1. Follow the installation instructions.
2. Use the appliance
• according to its intended use
• in good condition
• with due regard to safety and risk of danger.
3. Note that the appliance is exclusively for use in the
applications detailed in these installation instructions. Any
other use will not be considered to comply with
requirements and would invalidate the warranty.
4. Please take note that any assembly, commissioning,
servicing and adjustment work may only be carried out by
authorized persons.
5. Immediately rectify any malfunctions which may influence
safety.
2. Description of function
BA type backflow preventers are divided into three pressure
zones. The pressure in zone  is higher than in zone ,
which in turn is higher than in zone . A discharge valve is
connected to zone  which opens at the latest when the
differential pressure between zones  and  drops to 0.14
bar. The water from zone  discharges to atmosphere, both
check valves close and therefore separate zone  from zone
 and . In this way the danger of back pressure or back
syphonage into the supply network is prevented. The
pipework connection is interrupted and the drinking water
network is protected.
3. Application
Medium
Maximum inlet pressure
Minimum inlet pressure
4. Technical data
Installation position
Max. operating temperature 65°C (WRAS 60 °C)
Discharge pipe connection DN 50
Nominal diameter
5. Scope of delivery
The backflow preventer consists of:
• Housing
• Integral strainer, mesh size approx. 0.5 mm
• Valve cartridge with integral check valve and discharge
valve
• Outlet check valve
• Discharge connection
• Check ball valves
Honeywell GmbH
Water
10.0 bar
1.5 bar
Horizontal with discharge valve
downwards
/ "
3
8
GB
6. Options
BA195-3/8E = Standard version with connection thread
on housing
BA195-1/2A = Standard version with tailpieces connection 
size / "
1
2
7. Assembly
7.1. Installations Guidelines
• Install shutoff valves before and after backflow preventer
• Install in horizontal pipework with the discharge valve
downwards
• Ensure good access
- Simplifies maintenance and inspection
• If a fine filter is not installed in the drinking water system,
the installation of a filter with a mesh width of 100µ m is
recommended in front of the backflow preventer.
• In the case of fluctuating pre-pressure or an input pressure
over 10 bar, we recommend the insertion of a pressure
regulator in front of the backflow preventer.
• Do not install in places where flooding can occur
• The installation environment should be protected against
frost and ventilated well
• Install discharge pipework which has adequate capacity
• Thoroughly flush pipework
7.2. Assembly instructions
1. Thoroughly flush pipework
2. Install backflow preventer
• Install in horizontal pipework with discharge connection
directed downwards
• Note flow direction (indicated by arrow)
• Install without tension or bending stresses
• Provide a straight section of pipework of at least five times
the nominal valve size after the backflow preventer
• Torque check ball valves max. 15
3. Attach drain pipe to discharge connection (plastic pipe
HT 50)
4. The appliance is ready for use

8. Maintenance

We recommend a planned maintenance contract with
an installation company
Maintenance of backflow preventer must be carried out
by authorized personnel!
Disassemble ball valves after maintenance!
5
/ "
3
4
/ Nm
+2
-5
MU1H-1233GE23 R0617